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Question

Question 1: Select one answer. 10 points This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze. _u2_summarizing_data/_m1_examining_distributions/webcontent/image500.png Assume that the largest observation in this dataset is 8.6 minutes. If this observation were wrongly recorded as 86, then what would happen to the mean and median? A) Neither the mean nor the median would change. B) Both the mean and the median would change. C) The mean would stay the same, but the median would change. D) The mean would decrease, but the median would not change. E) The mean would increase, but the median would not change. Question 2: Select one answer. 10 points This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze. _u2_summarizing_data/_m1_examining_distributions/webcontent/image500.png Which of the following best describes the shape of the histogram? A) Symmetric B) Left-skewed with no outliers C) Right-skewed with no outliers D) Left-skewed with a possible outlier E) Right-skewed with a possible outlier Question 3: Select one answer. 10 points This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze. _u2_summarizing_data/_m1_examining_distributions/webcontent/image500.png Which of the following is a possible value of the median in this example? A) 3.3 B) 3.9 C) 4.6 D) 5.5 Question 4: Select one answer. 10 points Here are the number of hours that 9 students spend on the computer on a typical day: 1 6 7 6 8 11 6 12 15 The data from the above 9 students form what type of distribution? A) Unimodal B) Ultimodal C) Bimodal Question 5: Select one answer. 10 points The histogram below displays the distribution of 50 ages at death due to trauma (accidents and homicides) that were observed in a certain hospital during a week. _u2_summarizing_data/_m1_examining_distributions/webcontent/assessment1q2.gif What percentage of deaths were individuals younger than 35? A) 34% B) 60% C) 68% D) 70% E) 80%

Question 1: Select one answer. 10 points

This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze.

_u2_summarizing_data/_m1_examining_distributions/webcontent/image500.png

Assume that the largest observation in this dataset is 8.6 minutes. If this observation were wrongly recorded as 86, then what would happen to the mean and median?

A) Neither the mean nor the median would change.
B) Both the mean and the median would change.
C) The mean would stay the same, but the median would change.
D) The mean would decrease, but the median would not change.
E) The mean would increase, but the median would not change.

Question 2: Select one answer. 10 points

This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze.

_u2_summarizing_data/_m1_examining_distributions/webcontent/image500.png

Which of the following best describes the shape of the histogram?

A) Symmetric
B) Left-skewed with no outliers
C) Right-skewed with no outliers
D) Left-skewed with a possible outlier
E) Right-skewed with a possible outlier

Question 3: Select one answer. 10 points

This histogram shows the times, in minutes, required for 25 rats in an animal behavior experiment to successfully navigate a maze.

_u2_summarizing_data/_m1_examining_distributions/webcontent/image500.png

Which of the following is a possible value of the median in this example?

A) 3.3
B) 3.9
C) 4.6
D) 5.5

Question 4: Select one answer. 10 points

Here are the number of hours that 9 students spend on the computer on a typical day: 1 6 7 6 8 11 6 12 15

The data from the above 9 students form what type of distribution?

A) Unimodal
B) Ultimodal
C) Bimodal

Question 5: Select one answer. 10 points

The histogram below displays the distribution of 50 ages at death due to trauma (accidents and homicides) that were observed in a certain hospital during a week.

_u2_summarizing_data/_m1_examining_distributions/webcontent/assessment1q2.gif

What percentage of deaths were individuals younger than 35?

A) 34%
B) 60%
C) 68%
D) 70%
E) 80%

Added by Abigail H.